Quote (Spaceweather.com)
A moderate C7-class solar flare kicked off the solar storm and triggered a massive eruption of plasma, known as a coronal mass ejection. The incoming CME does not appear to be particularly potent; nevertheless, the cloud could trigger polar geomagnetic storms when it reaches Earth on or about June 23rd. Class C7 solar flares are the least powerful type of flares. The more-powerful M-class solar flares are classified as medium-strength events, with intense X-Class flares topping the solar storm list.
When coronal mass ejections are aimed at Earth, the charged particles they spew can interact with the planet's magnetic field to create dazzling auroras in polar regions. Extremely powerful solar storms can pose a danger to satellites and astronauts in space, as well as affect communications and power systems on the Earth's surface.
Packed with charged molecules and magnetic forces, solar storms headed in our direction can smash into the upper atmosphere, producing colorful aurora displays and making electrical systems go haywire on everything from satellites to power grids.
In 1989, one such geomagnetic storm knocked out the main electrical utility in Quebec, Canada, plunging millions into darkness for hours and costing billions of dollars to fix.
Quote (Spaceweather.com - 2003)
One of the most powerful solar flares in years erupted from giant sunspot 486 on Oct. 28th. The blast measuredX17on the Richter scale of solar flares. As a result of the explosion, a strong S3-class solar radiation storm was underway. The explosion also hurled a coronal mass ejection (CME) toward Earth. When it left the sun, the cloud was traveling 2125 km/s (almost 5 million mph). The CME struck Earth on Oct. 29th and sparked an intense geomagnetic storm.
http://www.spaceweather.com/archive.php?view=1&day=29&month=10&year=2003The present Activity is reletively speaking "Small" in comparison to what we have already seen from decades past. And outside of a Hollywood movie plot from "Knowing", typically just results in some spectacular aurora light shows
Edit: The Largest ever recorded Solar Flare was Nov. 2003 and measured an estimated Whooping X40 !!!!, but was classified as an X28......http://www.space.com/712-latest-sun-flare-put-x28-strongest-record.htmlThis post was edited by FullArcFG on Jun 22 2011 07:30am